Application of MZI Symmetrical Structure With Fiber Balls and Seven-Core Fiber in Microdisplacement Measurement

被引：0

作者：

Liming Zhao

Hong Li

Yanming Song

Mingli Dong

Lianqing Zhu

机构：

[1] Beijing Information Science & Technology University,Beijing Laboratory of Optical Fiber Sensing and System

[2] Beijing Information Science & Technology University,Beijing Key Laboratory of Optoelectronic Measurement Technology

[3] Beijing Information Science & Technology University,Overseas Expertise Introduction Center for Discipline Innovation (“111 Center”)

来源：

Photonic Sensors | 2019年 / 9卷

关键词：

Microdisplacement; Mach-Zehnder interferometer; fiber ball; symmetrical structure; seven-core fiber;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

An optical fiber microdisplacement sensor based on symmetric Mach-Zehnder interferometer (MZI) with a seven-core fiber and two single-mode fiber balls is proposed. The rationality and manufacturing process of the MZI sensing structure are analyzed. The fabrication mechanism of the Mach-Zehnder sensor by CO2 laser is described in detail. Experimental results show that temperature sensitivities of the two dips are 98.65 pm/°C and 89.72 pm/°C, respectively. The microdisplacement sensitivities are 2017.71 pm/mm and 2457.92 pm/mm, respectively. The simultaneous measurement of temperature and microdisplacement is demonstrated based on the sensitive matrix. The proposed Mach-Zehnder interference sensor exhibits the advantages of compact structure, simple manufacturing process, and high reliability.

引用

页码：97 / 107

页数：10

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